Independent variable multiflow high pressure pump

ABSTRACT

A high pressure pump is provided for independent variable control of the rate of flow in the different flows which are supplied by the pump. A plurality of fluidhandling working chambers of substantially radially expanding and contracting volume are provided in the rotor of the pump for delivery of high pressure fluid out of the pump; separated passage means are associated to the different working chamber groups; the working chamber groups are separated from each other for preventing flow from one flow into the other and separated actuator means end separated control-means associated to the separated actuator means are provided in the pump for the capability of independent variability of the rate of flows through the pump; while the whole device is constructed in such a way, that high pressure fluid can be handled in the pump and that high differences in pressure in the different flows are possible and managed and handled in the double flow pump.

United States Patent [191 Eickmann INDEPENDENT VARIABLE MULTIFLOW HIGHPRESSURE PUMP [76] Inventor: Karl Eickmann, 2420 lsshiki,

l-layama-machi, Japan [22] Filed: Aug. 19, 1970 [21] Appl. No.: 65,092

Related U.S. Application Data [60] Division of Ser. No. 2,624, Jan. 13,1970, which is a continuation-in-part of Ser. No. 749,028, July 31,1968, which is a continuation-in-part of Ser. No. 461,483, June 4, 1965,Pat. No. 3,398,698.

[30] Foreign Application Priority Data June 11, 1964 Japan 39-7664 June11, 1964 Japan 39-7665 July 10, 1964 Japan 39-9137 [52] U.S. Cl. 91/492,91/497 [51] Int. Cl. FOlb 13/04 [58] Field of Search 91/492, 494, 485,497, 91/216, 426

[56] References Cited UNITED STATES PATENTS 2,646,755 7/1953 Joy 91/4982,373,449 4/1945 Beneder 417/219 3,093,081 6/1963 Budzich 417/2163,526,468 9/1970 Moon et a1. 417/216 3,601,986 8/1931 Becker 417/2262,458,985 1/1949 Ferris et a1... 91/492 3,470,825 10/1969 Gsching 91/4943,086,477 8/1963 Ruhl 91/485 [111 3,805,675 [4 1 Apr. 23, 1974 PrimaryExaminer-William L. Freeh Attorney, Agent, or FirmMichael S. Striker [57] ABSTRACT A high pressure pump is provided for independent variablecontrol of the rate of flow in the different flows which are supplied bythe pump. A plurality of fluidhandling working chambers 'ofsubstantially radially expanding and contracting volume are provided inthe rotor of the pump for delivery of high pressure fluid out of thepump; separated passage means are associated to the different workingchamber groups; the working chamber groups are separated from each otherfor preventing flow from one flow into the other and separated actuatormeans end separated controlmeans associated to the separated actuatormeans are provided in the pump for the capability of independentvariability of the rate of flows through the pump; while the wholedevice is constructed in such a way, that high pressure fluid can behandled in the pump and that high differences in pressure in thedifferent flows are possible and managed and handled in the double flowpump.

1 7 Claims, 3 Drawing Figures MFHTEH APR 213 mu SHEET 1 UF 2 INVENTOR.

KARL E/CKMAN/V PATENTEDAPR 23 m4 3.8051575 SHEET 2 UF 2 Fig.3

ll/ I08 I INVENTOR. KARL E/CKMANN BY INDEPENDENT VARIABLE MULTIFLOW HIGHPRESSURE PUMP CROSS REFERENCE TO RELATED APPLICATIONS This applicationis a division of my copending patent application Ser. No. 2,624, filedJan. 13, 1970, which application Ser. No. 2,624, in turn, is acontinuation-inpart of my patent application Ser. No. 749,028, filed onJuly 31, 1968, which application Ser. No. 749,028, in turn, is acontinuation-in-part of my patent application Ser. No. 461,483, filedJune 4, 1965, now US. Pat. No. 3,398,698.

-REFERENCE TO ANOTHER PATENT This patent application deals with thematter of FIGS. 25 to 27 of my US. Pat. No. 3,398,698 issued on Aug. 27,1968. It contains FIGS. 25 to 27 of said patent as FIGS. 1 to 3 in thepresent patent application,

THIS INVENTION As far as multiple flow pumps have been utilized in thepast they have either been non-variable or they have been of lessefficiency, high volumetric losses or of low pressures in fluid only.Because the fluidhandling chambers were not tightly enough sealed ortheactuator means or the displacement means were not rigid enough toexercise high displacement force. In other devices the fluidhandlingmeans deformed under high pressures in fluid and restricted thepressures in the fluid in the device. Such known devices havesuccessfully operated at low pressures or at equal rates of flow and atequal pressures in the different flows but they were not able to handledifferent pressures and different rates of flow in pressure and rate offlow independent varied machines or vehicles. On the other hand formachines and vehicles with horizontal and vertical movements it isnecessary to utilize different pressures and different rates of flowduring operation of the device. At the same time the horizontalmovements and the vertical movements should be driven by the same powerplant in order to make the control of the maximum of output depending onthe power plant.

It is therefore the aim of this invention to provide an independentvariable multiflow-multipressure pump, wherein the rate of flow and thepressure of the different independent flows can be controlled, varifiedand increased to high pressures.

It is therefore the object of this invention to provide a plurality ofsubstantially radially enlarging and contracting fluid handling workingchambers capable of handling high pressures in fluid tightly arranged intwo different working chamber groups in a single rotor of afluidhandling device; to keep the said working chamber groups of the oneworking chamber group separated and sealed off from the working chambersof the other working chamber group and to provide each an independentlyvariable control device or adjustment device for adjustment of thedisplacement stroke of the displacement members which are associated tothe respective working chambers of the respective working chamber group.The adjustment device associated to the one working chamber group isindependently variable of the adjustment device of the other workingchamber group.

Another object of the invention is, to provide the adjustment devicesradially of the same rotor in order to make a strong adjustment alsoagainst high pressures possible.

A further object of the invention is to provide the selfadjustmentmembers onto the adjustment devices in order to prevent tilting andfriction between actuator means and adjustment control devices.

A further object of the invention is, to bear the rotor of a multipleflow multiple pressure pump in the same bearings for containing thedifferent rates of flow and the different pressures in the fluidhandling chambers in the same revolving rotor.

And it is another object of the invention to combine the adjustmentdevices of a multiple adjustable multiflow pump with flow directioncontrol valves.

A last object of the invention is, to lead the different flows of fluidaxially into and out of the same rotor in order to prevent radialdeformation or friction on radial control bodies in earlier machines ofdifierent adjustable pressures and flows.

REFERENCE TO THE DRAWINGS Some typical embodiments of the invention aredemonstrated in the drawings.

FIG. 1 is a longitudinal sectional view through an embodiment of theinvention;

FIG. 2 is a crossectional view through FIG. 1 taken along the line IIII; and

FIG. 3 is a longitudinal sectional view through another embodiment ofthe invention.

BRIEF DESCRIPTION OF THE DRAWINGS .has the feature that there are twoworking chamber groups 2 and 3 provided in this embodiment of theinvention and that in each of these working chamber groups a pluralityof working chambers are provided wherein a plurality of displacementmeans are moving inwards and outwards, each displacement means group inthe respective working chamber group and wherein two separatedadjustment devices and two separated actuator means are provided inorder to make the displacement adjustment of each of the displacementdevices possible. This feature provides the possibility that at leasttwo separate flows of fluid can flow through the machine and that eachflow of fluid which flows through this machine can be varied in its flowrate separately from the other and independently from the other byadjusting the displacement adjustment devices of the respectivedisplacement groups.

In the left side of FIG. 1 there is inside of the respective rotor means1 the first working chamber group 2 provided which has a plurality ofworking chambers 2. From each of the working chambers at least onerespective rotor passage 14 extends in one axial direction through rotormeans 1 and through the rotary control face'on the axial end thereof. Itcooperates with stationary control face on the respective control partor control portion or body of the housing 10 which has end members 10a,10b.

'from the respective rotor passage 14. The working chambers 2 of thisworking chamber group are provided with displacement means 4 therein anddisplacement means 4 are moveable inwards and outwards in the workingchambers thereby increasing and decreasing periodically the volume ofthe respective working chamber. Displacement means 2 are in thisembodiment shown as a preferred type of pistons which have piston shoes5 and the piston shoes 5 are having outer faces which are abut innerfaces of a bearing 12. The bearing 12 which is a guide member is locatedin another radial flexible or divided bearing means 1 l which has aninner face which corresponds complementary to the spherical outer faceof the bearing 12. Bearing means 1 1 has an outer face which ispreferably cylindrical and which is fixed in an inner face of the rotaryguide means or rotary guide means 8 and 9. Bearing means 11 is axiallymoveable within the hollow rotary guide member 8. Rotary guide member 8is borne in radial anti-friction bearings 7, preferably in a pluralityof such bearings, which are axially spaced from each other by a spacerring means provided between the two respective bearings 7. Bearings 7are borne in the moveable adjusting device 19 and mount annularprojecting portions 80 and 9a of guide means 8 and 9. Adjustmentdevicel9 may be provided or is in this embodiment preferably providedwith an adjustment connection means 21 and the actuation of theconnection means 21 therefore leads to radial movements of adjustmentdevice 19 and thereby radial movement of all parts which are bornetherein including the actuator means. Therefore if the rotor of themachine: revolves and if no eccentricity is present between the axis ofthe rotor and the axis of the adjustment device 19 then the inward andoutward movement of the displacement means 4 in the working chambers 2terminates. Rotor means 1 may have rotor shaft portions which may haveouter faces 6 and which may be rotatably borne in respective bearings orinner faces of respective housing portions or cover means.-

\ Rotor means 1 may also extend in a shaft means 13 whereby, it may bedriven or whereby the rotor drives another machine part. On the otheraxial portion of the rotor means 1 is the other working chamber group 3provided which also contains a plurality of working chambers 3 whereinalso displacement means 4 are moving radially outward and inward whenthe rotor l of the machine revolves. The operation of thus displacementmeans 4 is similar to that of the other displacement means group but thering 11 is located in the rotary guide member 9 instead of in the rotaryguide member 8 wherein the other ring 11 of the other working chambergroups or displacement means groups was located. From each of theworking chambers 3 in the working chamber group 3 of rotor means 1 arespective rotor passage 14 extends in the other axial direction throughrotor means 3 and through the rotary control face on the respective endof the rotor means 1 for cooperation with the respective stationarycontrol face on the portion of the housing or cover means 1. Rotaryguide member 9 is again borne in radial anti-friction bearings 7 andbearings 8 are borne in the second adjustment device 20. Secondadjustment device 20 has an adjustment device communication means 22. Ifthe communication means 22 is actuated then the adjustment device 20moves radially to the axis of the rotor and if an eccentricity ispresent between the axis of the adjustment device 20 and the axis ofrotor means 1, when rotor means 1 revolves then respective inward andoutward movement of the respective displacement means 4 in therespective working chambers 3 terminates and a flow of fluid is flowingtherethrough. Therefore according to this embodiment of the inventiontwo flows of fluid are flowing through the machine or are actuated inthe machine and both flows of fluid can be varied in its quantityindependently from each other by the independent fluid flow adjustmentcontrol devices or displacement adjustment control devices 19 or 20 withcommunication or connection members 21 or 22.

From the rotor passages 14 on the right side of rotor 1 there areextending respective control ports and fluid passages to respectivefluid ports 16 and 17 of the housing 10.

A special feature of this embodiment of the invention is that both flowsare variable and that both flows are reversible and that both flows canbe independently varied by separate fluid flow quantity adjustmentdevices. A further feature is that the rotor means 11 is axial pressurebalanced by pressure acting out of fluid in respective chambers. A.further feature is that the piston means 4 and the guide shoes 5 thereonare prevented from any tilting and sticking to the guide means becausethe guide means, are spherically swingable. The guide members 12 areself-adjusting in order to have axes which are exactly parallel to theaxes of the piston shoes 5 of the pistons 4. Therefore between theserespective members any tilting is prevented. The supply of such aspherical adjustment means and axially moveable adjustment means is veryimportant since the rotary guide members 8 and 9 of this embodiment ofthe invention are borne inbearings which are provided in one axial endthereof only.'Such bearings might therefore during a longer life of themachine get different radial clearances and therefore the axes of therotary guide members 8 and 9 may during a longer life or operation ofthe machine tend to tilt or incline a little with respect to the rotoraxis. That would then in turn result of inclination between the outerfaces of the piston shoes and the inner faces of the guide members if noadjustable bearings and axially moveable rotary members 12 and 11 wouldbe provided. By the provision of the several means a perfect fluidhandling device for two flows of variable'and reversible fluid flow isassured and created by this embodiment of the invention.

In FIG. 3 there is another embodiment of the invention demonstratedwhich also shows a two flow fluid handling device. There are two workingchamber groups 102 and 103 provided in the rotor means 101 of thisembodiment of the invention and both working chamber groups areactuating or actuated each one of separated flow of fluid. Check valvemeans 25 are provided for the entrance of fluid into the respectiveworking chambers while exit check valve means 26 are provided after eachworking chamber in order to open or close the respective passages to orfrom the respective working chambers. Separate fluid passages 27 and28are provided in order to pass two separated flows of fluid out of therotor means 101 of the machine. An axially extending portion is providedon rotor means 101 wherethrough the respective fluid passages 27 and 28extend and this portion revolves in a bearing portion of the housing 110of the machine, The rotor means 101 with its shaft 113 is borne inrespective bearing means 106 which makes a revolution of the rotor meanspossible. The actuator means include first and second actuator guidemeans 108, 109 with annular axially projecting portions 108a, 109asimilar to 8, 9, 8a, 9a in the embodiment of FIGS. 1, 2. The use of acheck valve in the inlet means and outlet means to the fluid chambersassures that no leakage through control interfaces or through stationaryand rotary' control faces will happen. The disadvantage thereof is onthe contrary that such a fluid machine as shown in FIG. 3 can only actas a fluid pump or as a compressor and that it can deliver flowsonly inone delivery direction. Therefore according to this inventiondirectional control means or control cylinders 34, 35 with controlpistons 32 therein are provided for the directional control of therespective delivered flows. One flow of fluid is delivered throughpassage 27 while the other is delivered to passage 28 and one of theflows is controlled directly or indirectly by control means 34 while theother is controlled by control means 35 inner control slides 39, 40 areprovided in control pistons 32.

The control pistons of the directional control valves 34 and 35 haveconnection means for the connection of the respective fluid flowadjustment devices 121 or 122 with the respective directional controlpiston 32. A gearing means or transmission means may be provided betweenthe respective directional control pistons 32 and the respective fluidflow adjustment device 12I or 122 so that an axial movement of thecontrol piston 32 out of its central neutral position results in adisplacement increase in the respective working chambers while thedisplacement of the respective displacement means is zero if the controlpiston of the directional control valve 32.is moved into its neutralposition. For this purpose the transmission means are provided between arespective control piston 32 of a respective directional control valve34 or 35 and a respective fluid flow adjustment device 121 or 122. Itmay for instance be a cam with a slot means cam slot 33 in piston 32 anda respective connection follower pin or the like may be provided in slot33 secured to the respective fluid flow' adjustment device 121 or 122.

What is claimed, is:

1. In a fluid handling device, in combination, a housing means havingbearing means, first and second end members, first inlet and outletmeans, and second inlet and outlet means, respectively; rotor meansincluding a rotor and a rotor shaft mounted in said bearing means forrotation about an axis, said rotor having two axially spaced first andsecond groups of circumferentially spaced radial working chambers, andfirst and second groups of circumferentially spaced passagescommunicating with said first and second groups of working chambers,respectively, and with said first and second inlet and outlet means,respectively, during rotation of said rotor means, said rotor meansincluding means for fluid tightly separating said first groups ofworking chambers and passages from said second groups of workingchambers and passages; first and second groups of displacement meansmounted in said working chambers, respectively for radial movement;rotary first and second annular actuator guide means including first andsecond annular portions surrounding said first and second groups ofdisplacement means, respectively, and having first and second innerannular surfaces, first and second bearing and self-adjusting ringshaving planar faces and part-spherical faces and located between saidfirst and second displacement means-and said first and second innerannular surfaces of said first and second annular portions of said firstand second annular actuator guide means; and first and second adjustingmeans mounted in said housing means inward of said first and second endmembers, and including first and second support portions movable inradial direction, first and secondadjusting rings secured to said firstand second support portions, respectively, and surrounding said firstand second annular portions, respectively, and first and second bearingsbetween said first and second adjusting rings and said first and secondannular portions so that the eccentricity of said first and secondannular actuator guide means relative to said axis can be independentlyadjusted by said first and second adjusting means whereby the flow rateof first and second streams flowing through said first inlet and outletmeans and said second inlet and outlet means can be independentlyadjusted.

2. In a fluid handling device, in combination, a housing means havingbearing means, first and second end members, first inlet and outletmeans, and second inlet and outlet means, respectively; rotor meansincluding 'a rotor and a rotor shaft mounted in said bearing means forrotation about an axis, said rotor having two axially spaced first andsecond groups of circumferentially spaced radial working chambers, andfirst and second groups of circumferentially spaced passagescommunicating with said first and second groups of working chambers,respectively, and with said first and second inlet and outlet means,respectively, during rotation of said rotor means; first and secondcheck valve means in said first and second passages, respectively, forpermitting flow only in one flow direction; said rotor means includingmeans for fluid tightly separating said first groups of working chambersand passages from said second groups of working chambers and passages;first and second groups of displacement means mounted in said workingchambers of said first and second groups of working chambers,respectively, for radial movement; rotary first and second annularactuator guide means including first and second annular portionssurrounding said first and second groups of displacement means,respectively, and having first and second inner annular surfaces engagedby said first and second groups of displacement means, respectively, andfirst and second annular projecting portions projecting outward in axialdirection toward said first and second end members, respectively; firstand second adjusting means mounted in said housing means inward of saidfirst and second end members, and including first and second supportportions movable in radial direction, first and second adjusting ringssecured to said' first and second support portions, respectively, andsurrounding said first and second annular portions, respectively, andfirst and second bearings bearings between said first and secondadjusting rings and said first and second annular portions; and firstand second control valve means having first and second slides connectedwith said first and second adjusting means for independently adjustingthe flows through said first and second inlet and outlet means so thatthe eccentricity of said first and second annular actuator guide meansrelative to said axis can be independently adjusted by said first andsecond adjusting means whereby the flow rate of first and second streamsflowing through said first inlet and outlet means and said second inletand outlet means can be independently adjusted.

3. In a fluid handling device, in combination, a housing means havingbearing means, first and second end members, first inlet and outletmeans, and second inlet and outlet means, respectively; rotor meansincluding a rotor and a rotor shaft mounted in said bearing means forrotation about an axis, said rotor having two axially spaced first andsecond groups of circumferentially spaced radial working chambers, andfirst and second groups of circumferentially, spaced passagescommunicating with said first and second groups of working chambers,respectively, and with said first and second inlet and outlet means,respectively, during rotation of said rotor means, said rotor meansincluding means for fluid tightly separating said first groups ofworking chambers and passages; first and second groups of axially spaceddisplacement means mounted in said working chambers of said first andsecond groups of working chambers, respectively, for radial movementindependently of each other; rotary first and second axially spacedannular actuator guide means mounted in said housing means for radialmovements independently of each other, and including first and secondaxially spaced annular portions surrounding said first and second groupsof displacement means, respectively, and having first and second innerannular surfaces engaged by said first and second groups of displacementmeans, respectively, and first and second axially spaced annularprojecting portions projecting outward in axial direction toward saidfirst and second end members, respectively; first and second axiallyspaced adjusting means mounted in said housing means inward of saidfirst and second end members, and including first and second axiallyspaced support portions movable in radial direction independently ofeach other, first and second axially spaced adjusting rings secured tosaid first and second support portions, respectively, and surroundingsaid first and second annular projecting portions, respectively, andfirst and second bearings between said first and second adjusting ringsand said first and second annular projecting portions so that theeccentricity of said first and second annular actuator guide meansrelative to said axis can be independently adjusted by said first andsecond adjusting means whereby the flow rate of first and second streamsflowing through said first inlet and outlet means and said second inletand outlet means can be independently adjusted; and valve means forcontrolling the flow into said inlet means and out of said outlet means,and including two axially movable valve slide means con nected with saidfirst and second adjusting means respectively.

4. A device as claimed in claim 3 wherein said first and second groupsof working chambers are formed in an integral rotor body.

5. A device as claimed in claim 3 wherein said passages havesubstantially radial portions connected with said working chambers.

6. A device as claimed in claim 3,whe'rein said annular portionssurrounding said first and second groups of displacement means having agreater diameter than the diameter of said annular projecting portionsof said first and second annular guide means and of said adjustingrings. v

7. A device as claimed in claim 6 wherein said first and second bearingsare first and second anti-friction bearings.

1. In a fluid handling device, in combination, a housing means havingbearing means, first and second end members, first inlet and outletmeans, and second inlet and outlet means, respectively; rotor meansincluding a rotor and a rotor shaft mounted in said bearing means forrotation about an axis, said rotor having two axially spaced first andsecond groups of circumferentially spaced radial working chambers, andfirst and second groups of circumferentially spaced passagescommunicating with said first and second groups of working chambers,respectively, and with said first and second inlet and outlet means,respectively, during rotation of said rotor means, said rotor meansincluding means for fluid tightly separating said first groups ofworking chambers and passages from said second groups of workingchambers and passages; first and second groups of displacement meansmounted in said working chambers, respectively for radial movement;rotary first and second annular actuator guide means including first andsecond annular portions surrounding said first and second groups ofdisplacement means, respectively, and having first and second innerannular surfaces, first and second bearing and self-adjusting ringshaving planar faces and part-spherical faces and located between saidfirst and second displacement means and said first and second innerannular surfaces of said first and second annular portions of said firstand second annular actuator guide means; and first and second adjustingmeans mounted in said housing means inward of said first and second endmembers, and including first and second support portions movable inradial direction, first and second adjusting rings secured to said firstand second support portions, respectively, and surrounding said firstand second annular portions, respectively, and first and second bearingsbetween said first and second adjusting rings and said first and secondannular portions so that the eccentricity of said first and secondannular actuator guide means relative to said axis can be independentlyadjusted by said first and second adjusting means whereby the flow rateof first and second streams flowing through said first inlet and outletmeans and said second inlet and outlet means can be independentlyadjusted.
 2. In a fluid handling device, in combination, a housing meanshaving bearing means, firSt and second end members, first inlet andoutlet means, and second inlet and outlet means, respectively; rotormeans including a rotor and a rotor shaft mounted in said bearing meansfor rotation about an axis, said rotor having two axially spaced firstand second groups of circumferentially spaced radial working chambers,and first and second groups of circumferentially spaced passagescommunicating with said first and second groups of working chambers,respectively, and with said first and second inlet and outlet means,respectively, during rotation of said rotor means; first and secondcheck valve means in said first and second passages, respectively, forpermitting flow only in one flow direction; said rotor means includingmeans for fluid tightly separating said first groups of working chambersand passages from said second groups of working chambers and passages;first and second groups of displacement means mounted in said workingchambers of said first and second groups of working chambers,respectively, for radial movement; rotary first and second annularactuator guide means including first and second annular portionssurrounding said first and second groups of displacement means,respectively, and having first and second inner annular surfaces engagedby said first and second groups of displacement means, respectively, andfirst and second annular projecting portions projecting outward in axialdirection toward said first and second end members, respectively; firstand second adjusting means mounted in said housing means inward of saidfirst and second end members, and including first and second supportportions movable in radial direction, first and second adjusting ringssecured to said first and second support portions, respectively, andsurrounding said first and second annular portions, respectively, andfirst and second bearings bearings between said first and secondadjusting rings and said first and second annular portions; and firstand second control valve means having first and second slides connectedwith said first and second adjusting means for independently adjustingthe flows through said first and second inlet and outlet means so thatthe eccentricity of said first and second annular actuator guide meansrelative to said axis can be independently adjusted by said first andsecond adjusting means whereby the flow rate of first and second streamsflowing through said first inlet and outlet means and said second inletand outlet means can be independently adjusted.
 3. In a fluid handlingdevice, in combination, a housing means having bearing means, first andsecond end members, first inlet and outlet means, and second inlet andoutlet means, respectively; rotor means including a rotor and a rotorshaft mounted in said bearing means for rotation about an axis, saidrotor having two axially spaced first and second groups ofcircumferentially spaced radial working chambers, and first and secondgroups of circumferentially spaced passages communicating with saidfirst and second groups of working chambers, respectively, and with saidfirst and second inlet and outlet means, respectively, during rotationof said rotor means, said rotor means including means for fluid tightlyseparating said first groups of working chambers and passages; first andsecond groups of axially spaced displacement means mounted in saidworking chambers of said first and second groups of working chambers,respectively, for radial movement independently of each other; rotaryfirst and second axially spaced annular actuator guide means mounted insaid housing means for radial movements independently of each other, andincluding first and second axially spaced annular portions surroundingsaid first and second groups of displacement means, respectively, andhaving first and second inner annular surfaces engaged by said first andsecond groups of displacement means, respectively, and first and secondaxially spaced annular projecting portions projecting outward in axialdirection toward said first and second end members, respectively; firstand second axially spaced adjusting means mounted in said housing meansinward of said first and second end members, and including first andsecond axially spaced support portions movable in radial directionindependently of each other, first and second axially spaced adjustingrings secured to said first and second support portions, respectively,and surrounding said first and second annular projecting portions,respectively, and first and second bearings between said first andsecond adjusting rings and said first and second annular projectingportions so that the eccentricity of said first and second annularactuator guide means relative to said axis can be independently adjustedby said first and second adjusting means whereby the flow rate of firstand second streams flowing through said first inlet and outlet means andsaid second inlet and outlet means can be independently adjusted; andvalve means for controlling the flow into said inlet means and out ofsaid outlet means, and including two axially movable valve slide meansconnected with said first and second adjusting means respectively.
 4. Adevice as claimed in claim 3 wherein said first and second groups ofworking chambers are formed in an integral rotor body.
 5. A device asclaimed in claim 3 wherein said passages have substantially radialportions connected with said working chambers.
 6. A device as claimed inclaim 3, wherein said annular portions surrounding said first and secondgroups of displacement means having a greater diameter than the diameterof said annular projecting portions of said first and second annularguide means and of said adjusting rings.
 7. A device as claimed in claim6 wherein said first and second bearings are first and secondanti-friction bearings.